September is one of the warmer months of the year in Macon, with average highs near 30.6°C and lows around 17.9°C (mean 24.3°C). It is about average for rainfall, averaging 89 mm of rainfall and 71% relative humidity across the period.
September is one of the warmer months of the year in Macon. Across 45 years of records, the warmest September in Macon was 2019 — when the month averaged 28.3°C — while the coldest was 1994 at 21.8°C. Typical September days reach 30.6°C with nights near 17.9°C. The long-term trend is warming, about 0.4°C per decade.
September is about average for rainfall in Macon, averaging 89 mm of rainfall. The wettest September on record was 2004 with 323 mm, while the driest was 2005 at 5 mm.
Relative humidity in Macon during September averages 71%. The most humid September was 1992 at 82%, and the least humid was 2019 at 56%.
September receives about 4.8 kWh/m²/day of solar energy in Macon. The sunniest September was 2019 at 5.7 kWh/m²/day, and the cloudiest was 1988 at 3.9.
Average wind speed in Macon during September is 0.3 m/s. The windiest September was 2004 at 0.5 m/s, while the calmest were 2022, 2023 and 2025, among others at 0.3 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 23.6°C | 24.1°C | 23.8°C | 25.3°C | 24.4°C | +0.8°C |
| Avg High | 30.0°C | 30.7°C | 29.7°C | 31.8°C | 30.7°C | +0.7°C |
| Avg Low | 17.3°C | 17.5°C | 17.8°C | 18.8°C | 18.2°C | +0.9°C |
| Avg Rain | 74 mm | 91 mm | 110 mm | 74 mm | 98 mm | +23 mm |
September temperatures in Macon have risen by about 1.2°C between 1981–1985 and 2021–2025.
September has ranged from a record low of 6.6°C (1999) to a record high of 39.3°C (2019).
Rainfall in September is about average for rainfall, averaging 89 mm, with a wettest year of 323 mm.
One of the best times to visit Macon
September is one of the best times to visit Macon. Expect days averaging 30.6°C and nights around 17.9°C (mean 24.3°C) — warmer than Macon's yearly average — with higher rainfall (89 mm), so conditions are generally comfortable for sightseeing and outdoor plans.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 31.9°C | 24.9°C | 18.0°C | 35.9°C | 13.7°C | 18 mm | 67% | 0.3 m/s | 5.4 |
| 2024 | 31.6°C | 25.7°C | 19.7°C | 38.0°C | 16.6°C | 219 mm | 71% | 0.4 m/s | 4.2 |
| 2023 | 31.5°C | 24.8°C | 18.0°C | 36.5°C | 13.3°C | 47 mm | 68% | 0.3 m/s | 4.9 |
| 2022 | 30.1°C | 23.7°C | 17.4°C | 36.5°C | 9.8°C | 50 mm | 71% | 0.3 m/s | 5.1 |
| 2021 | 30.1°C | 23.9°C | 17.7°C | 34.3°C | 10.3°C | 97 mm | 73% | 0.3 m/s | 5.1 |
| 2020 | 29.0°C | 23.5°C | 18.1°C | 36.4°C | 9.4°C | 155 mm | 77% | 0.4 m/s | 4.4 |
| 2019 🔥 | 36.1°C | 28.3°C | 20.6°C | 39.3°C | 13.9°C | 11 mm | 56% | 0.4 m/s | 5.7 |
| 2018 | 34.3°C | 27.9°C | 21.5°C | 37.3°C | 19.7°C | 41 mm | 69% | 0.3 m/s | 5.1 |
| 2017 | 30.3°C | 23.8°C | 17.3°C | 34.8°C | 12.1°C | 105 mm | 70% | 0.4 m/s | 5.2 |
| 2016 | 33.0°C | 26.3°C | 19.7°C | 36.8°C | 11.7°C | 58 mm | 68% | 0.3 m/s | 5.3 |
| 2015 | 29.1°C | 23.6°C | 18.1°C | 36.6°C | 10.8°C | 92 mm | 78% | 0.3 m/s | 4.3 |
| 2014 | 31.2°C | 25.3°C | 19.4°C | 36.0°C | 13.7°C | 89 mm | 75% | 0.3 m/s | 4.3 |
| 2013 | 29.2°C | 23.4°C | 17.7°C | 33.5°C | 12.3°C | 48 mm | 80% | 0.3 m/s | 5 |
| 2012 | 30.6°C | 24.0°C | 17.4°C | 35.8°C | 10.2°C | 74 mm | 73% | 0.3 m/s | 5 |
| 2011 | 30.8°C | 24.4°C | 18.0°C | 37.8°C | 14.4°C | 94 mm | 67% | 0.3 m/s | 4.5 |
| 2010 | 33.2°C | 25.9°C | 18.5°C | 37.5°C | 13.0°C | 125 mm | 64% | 0.3 m/s | 5.6 |
| 2009 | 28.9°C | 23.8°C | 18.6°C | 33.9°C | 9.5°C | 189 mm | 79% | 0.3 m/s | 4.6 |
| 2008 | 30.8°C | 24.6°C | 18.3°C | 35.9°C | 11.4°C | 37 mm | 71% | 0.3 m/s | 5.2 |
| 2007 | 30.8°C | 24.5°C | 18.2°C | 35.4°C | 10.8°C | 83 mm | 73% | 0.3 m/s | 5 |
| 2006 | 29.7°C | 23.3°C | 16.8°C | 34.5°C | 10.5°C | 65 mm | 72% | 0.3 m/s | 4.8 |
| 2005 | 32.5°C | 25.6°C | 18.7°C | 35.9°C | 14.4°C | 5 mm | 68% | 0.4 m/s | 5.6 |
| 2004 🌧️ | 27.7°C | 22.9°C | 18.0°C | 32.3°C | 11.5°C | 323 mm | 82% | 0.5 m/s | 4.4 |
| 2003 | 28.2°C | 22.5°C | 16.7°C | 32.5°C | 7.7°C | 58 mm | 77% | 0.3 m/s | 5.2 |
| 2002 | 31.2°C | 25.6°C | 20.0°C | 37.6°C | 16.8°C | 122 mm | 75% | 0.3 m/s | 4.2 |
| 2001 | 29.4°C | 22.7°C | 15.9°C | 34.6°C | 7.2°C | 79 mm | 67% | 0.3 m/s | 5 |
| 2000 | 27.6°C | 22.2°C | 16.8°C | 32.7°C | 9.2°C | 134 mm | 80% | 0.4 m/s | 4.4 |
| 1999 | 31.5°C | 23.7°C | 15.8°C | 38.4°C | 6.6°C | 81 mm | 59% | 0.4 m/s | 5 |
| 1998 | 30.5°C | 24.5°C | 18.5°C | 35.1°C | 11.4°C | 169 mm | 75% | 0.3 m/s | 4.6 |
| 1997 | 32.2°C | 25.1°C | 17.9°C | 37.2°C | 11.7°C | 148 mm | 64% | 0.3 m/s | 4.9 |
| 1996 | 30.4°C | 23.9°C | 17.3°C | 35.5°C | 12.0°C | 106 mm | 71% | 0.3 m/s | 4.7 |
| 1995 | 30.2°C | 23.9°C | 17.6°C | 35.8°C | 11.4°C | 68 mm | 74% | 0.3 m/s | 4.6 |
| 1994 ❄️ | 27.3°C | 21.8°C | 16.3°C | 32.1°C | 11.2°C | 91 mm | 82% | 0.3 m/s | 4.8 |
| 1993 | 32.4°C | 25.3°C | 18.2°C | 35.8°C | 8.1°C | 65 mm | 64% | 0.3 m/s | 4.8 |
| 1992 | 28.4°C | 23.2°C | 18.0°C | 31.6°C | 10.2°C | 116 mm | 82% | 0.3 m/s | 4.4 |
| 1991 | 30.6°C | 24.0°C | 17.5°C | 36.9°C | 9.0°C | 28 mm | 72% | 0.3 m/s | 5.2 |
| 1990 | 33.2°C | 25.7°C | 18.3°C | 39.0°C | 8.6°C | 38 mm | 59% | 0.3 m/s | 5.1 |
| 1989 | 29.3°C | 23.6°C | 17.9°C | 34.3°C | 10.8°C | 141 mm | 76% | 0.3 m/s | 4.1 |
| 1988 | 28.8°C | 23.5°C | 18.1°C | 33.2°C | 13.0°C | 142 mm | 81% | 0.3 m/s | 3.9 |
| 1987 | 30.4°C | 24.1°C | 17.8°C | 34.6°C | 11.6°C | 58 mm | 70% | 0.3 m/s | 4.6 |
| 1986 | 30.4°C | 24.6°C | 18.8°C | 35.5°C | 14.5°C | 89 mm | 77% | 0.3 m/s | 4.5 |
| 1985 | 30.7°C | 23.7°C | 16.7°C | 35.5°C | 8.4°C | 29 mm | 66% | 0.3 m/s | 5.1 |
| 1984 | 30.4°C | 23.2°C | 15.9°C | 36.6°C | 10.1°C | 11 mm | 65% | 0.4 m/s | 4.8 |
| 1983 | 28.5°C | 22.6°C | 16.7°C | 36.2°C | 6.8°C | 91 mm | 74% | 0.3 m/s | — |
| 1982 | 29.9°C | 23.4°C | 16.9°C | 34.6°C | 8.5°C | 70 mm | 68% | 0.3 m/s | — |
| 1981 | 31.8°C | 24.1°C | 16.5°C | 35.0°C | 8.5°C | 39 mm | 61% | 0.3 m/s | — |
Actual recorded September data for each year, 1981–2025 — sourced from NASA POWER.
The average high in September is around 30.6°C with lows near 17.9°C (mean 24.3°C), based on 45 years of NASA POWER data.
September averages 89 mm of rainfall in Macon, about average for rainfall. The wettest on record was 323 mm in 2004.
The hottest September reached 39.3°C in 2019. The coldest dipped to 6.6°C in 1999.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average September temperatures have risen by about 1.2°C. Daytime highs moved from 30.3°C to 31°C and overnight lows from 16.5°C to 18.2°C over the same span.
September is one of the warmer months of the year in Macon and about average for rainfall, so plan for around 30.6°C daytime highs and 17.9°C at night.
Not quite — September is the 9th coolest month in Macon, averaging 24.3°C.
For September in Macon, pack light, breathable clothing and sun protection, with typical highs of 30.6°C and lows of 17.9°C. Bring an umbrella or light rain jacket too.
Relative humidity in September averages 71% — moderately humid.
Average wind speed in September is 0.3 m/s. The windiest September on record averaged 0.5 m/s (2004).
The wettest September on record was 2004 with 323 mm. On average, September sees 89 mm.
All figures are derived from NASA POWER (Prediction Of Worldwide Energy Resources), based on MERRA-2 satellite reanalysis, covering 1981–2025.
Explore how the weather in Macon behaves each September, based on 45 years of NASA POWER climate data from 1981 to 2025. This page breaks down average temperatures, rainfall, humidity, wind and solar radiation for September specifically, along with year-by-year records and how the month has changed over the decades.
